High-fanout clock driver for low level gates.

摘要

A clock driver circuit for low level gates having high fanout capabilities includes a first circuit portion, a second circuit portion, an output transistor and a load resistor. The first circuit portion is formed of a first NAND logic gate and a first inverter gate. The input node of the first inverter circuit gate is coupled to the output node of the first NAND gate. The input node of the first NAND gate is connected to an input circuit terminal. The second circuit portion is formed of a second NAND logic gate, a third NAND logic gate and a second inverter gate. The input nodes of the second and third NAND gates are coupled together and to the input circuit terminal. The output node of the second and third NAND gates are coupled together and to the input node of the second inverter gate. The output of the second inverter gate is connected to an output circuit terminal. The output transistor has its base coupled to the output node of the first inverter gate, its collector coupled to a voltage supply pctential and its ernittercenpled tothe output circuit ermi- nal The Inad resistor has its nna end connected to the base of the output transistor and its sether end connected to the voltage supply potentia;